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Alenkinab [10]
3 years ago
12

. Question 1.1. What is the first step in solving x2 + 2x + 3 = 0 by completing the square?. (Points : 1). Factor the left side.

. . Add 1 to each side of the equation.. . Divide both sides of the equation by 2.. . Subtract 3 from each side of the equation..
Mathematics
2 answers:
Assoli18 [71]3 years ago
6 0
U r going to subtract 3 from each side of the equation....leaving you with :
x^2 + 2x = -3
Arturiano [62]3 years ago
6 0
The first step to solving an equaiton of the form<span>ax2+bx+c = 0</span>is by completing the square by first dividing by a, giving<span>x2+bx/a+c/a = 0 
then subtract c/a to both sides.

</span>In this regard, the first step to the equation is to C. <span>. Subtract 3 from each side of the equation..</span>
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An angle measures 79.4 degrees more than the measure of its supplementary angle. What is the measure of each angle?
tatyana61 [14]

Answer:

The angles are: 50.3 and 129.7

Step-by-step explanation:

The sum of supplementary angles is 180°.

Let x be one angle then the other angle will be x+79.4

Using the supplementary angle sum

x+x+79.4 = 180\\2x+79.4 = 180\\2x = 180-79.4\\2x = 100.6\\\frac{2x}{2} = \frac{100.6}{2}\\x = 50.3

For the measurement of 2nd angle

x+79.4 => 50.3+79.4 => 129.7

Hence,

The angles are: 50.3 and 129.7

4 0
3 years ago
Please help! I'm not the best at dividing with exponents!
Makovka662 [10]

MrBillDoesMath!

Answer: The first radio button choice  8/3 * m^8


Steps:

120 (m^ 16)  /  45 (m^8) =

120/45  *  (m^16)/(m^8) =

Simplify 120/45  (15 or 5 *3 divides each). Since base "m" is same in both terms simply subtract exponents.

8/3  (  m^(16 - 8))  =

8/3 * m^8



MrB

5 0
3 years ago
Rebecca has 8 basketball cards. This is 1/5 the amount that Eden has. How many basketball cards does Eden have?
Margarita [4]

Answer:

Eden has 40 basketball cards

Step-by-step explanation:

Just do 5*8 which equals to 40, you can go back and check your answer by finding the 1/5 of 40 and you would receive 8

7 0
3 years ago
Dominic invested $520 in an account in the year 1995, and the value has been growing exponentially at a constant rate. The value
Tom [10]

Answer:

I believe the answer is $936.64

Step-by-step explanation:

I hope this helps!

6 0
3 years ago
A rucksack can hold a maximum of 6 kg.
ratelena [41]

Answer:

9 textbooks!

Step-by-step explanation:

Rucksack can hold = 6kg

Mass of textbook = 680g

So, here we need to show the division for finding the number of textbooks it can hold.

680 g in KG's = 0.68

Now, 6/0.68

That is 8.82 ( Round off = 9 textbooks)

5 0
3 years ago
Read 2 more answers
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